Scheduling and managing events using Outlook.com calendar
I have found a new process that replicates the "drag and drop email to calendar". Right click on an email and select "quick steps" and then "Create New". Create a quick step to "Send Email to Appointment". Once this is done you can right click any email and after selecting the appropriate quick step it will create a new appointment.
Of course, I don't know if this works in the new email, but I will give it a try.